Improvement in valves for hose-nozzles



UNITED STATESd PATENT OFFICE.

JOHN M. DE BOLLE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN VALVES FOR HOSE-NOZZLES.

To all whom, it may concern,.-

Be it known that I, JOHN M. DE BoLLE, of the city of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvementin Valves for Hose-Pipes; and I do hereby declare that the following is a full, clear, and exact description ot' the construction and operation of the same, reference being had to the accompanying drawings, making part ot this specification, in which- Figure l is a side view, and Figs. 2 and 3 longitudinal sections of a hose-pipe for pavement-washing having my improvement applied thereto; and Figs. 4, 5, and 6 face, back, and side views, respectively, of the valve attached to its carrier, like letters indicating the same parts when in the different figures.

Letters Patent were granted to me dated the 28th day of May, 1861, for a certain improvement in valves for hose-pipes g and the present invention relates to a peculiar inode of constructing and applying the valve of such a pipe so as to better prevent accidental leaking when the valve is closed upon its seat, without obstructing the free passage of water through the pipe when the valve is open.

It consists in the application, substantially in the manner hereinafter described and set forth, to hose-pipes of a conically-faced diskvalve having a lian ge, and also a flat packingring of thin gum-elastic fabric secured against the said iiange by means of a groove around between the same and the conical or beveled face of the disk, so that the said ring ofgumelastic and the said valve-faces shall together operate to produce a perfect] y water-tight joint in the same when closed.

In the drawings, A is the valve-disk; C, its conical face; F, its flange, and E its thin ring of gum elastic between the said face and ange.

H is a shoulder in the pipe, which att'ords the xed seat for the valve A, and also causes ample rooln in the inside ot' the pipe for the motion ofthe valve and its carrier and for the passage of the water through the pipe when the valve is open.

G is the carrier, which is attached to the` back of the disk A, and also to the usual thumb-lever, D; and C is the usual spring Specification forming part of Letters Patent N0. 37,680. dated February 17, 1863.

which aids in closing the valve when the op erators thumb or tinger releases the lever D The valve-disk A has its edge or face beveled and ground accurately to fit in a correspondingly-beveled seat in the shoulder H of the pipe, and has also its langeF, which projects around its rear edge, made to be at the same time almost in contact with the tia-t face otl the shoulder H of the valve-seat, a narrow groove .being lnade around` between the said iangeF and the beveled edge or face C, for the purpose of receiving the inner edge of the thin packing-ring E of gum-elastic fabric, so that it will be securely retained in its place against the face of the flange F, and thus produce a thin packing between the tiange and the seat of the valve A when the latter is closed, as seen in Fig. 2.

In the operation ot' this valve, when thc lever D is pressed backward, and the valve consequently opened, as seen in Fig. 3, the water passes freely from m to n but when the said lever is released from the operators.

thumb or nger, the spring O, iu connection with thc pressure of the water, causes the val ve-disk A to close down upon its seat and compress the gum ring E between the ange and the tlat face of the seat until the beveled faces of the valve and seat come into contact; but should the faces ot the valve and its seat not be accurately fitted together, or should any ne grains of sand accidentally be caught between them, the gum ring E will com pen- .sate for the obstruction or defect, and thus 

